Right now, when a product feed fails there is limited explanation for why. Often times this requires resources from the support team to then triage why it failed. Some options I've come across that would be helpful would be duplicate headers, not saving as a CSV file, etc.
Awesome! Some other thoughts from the team - notifications for duplicate product ids (might already exist), no head but content in column, columns not in correct order
We are in fact adding explanations for duplicate columns by end of month. Please let us know what other ones you'd like to see.